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From: Lee Jones <lee.jones@linaro.org>
To: linus.walleij@linaro.org, bgolaszewski@baylibre.com
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,
	Lee Jones <lee.jones@linaro.org>,
	Asmaa Mnebhi <Asmaa@mellanox.com>
Subject: [PATCH 10/10] gpio: gpio-mlxbf2.c: Provide __releases() annotation to stop confusing Sparse
Date: Tue, 30 Jun 2020 14:33:45 +0100	[thread overview]
Message-ID: <20200630133345.2232932-11-lee.jones@linaro.org> (raw)
In-Reply-To: <20200630133345.2232932-1-lee.jones@linaro.org>

Sparse cannot peer into other functions to see when and if locks are
acquired and released, thus it simply warns that a 'context imbalance'
is detected instead.  Let's be kind to Sparse and let it know that
this behaviour is intentional.

 drivers/gpio/gpio-mlxbf2.c:125:12: warning: context imbalance in 'mlxbf2_gpio_lock_acquire' - different lock contexts for basic block
 drivers/gpio/gpio-mlxbf2.c:151:13: warning: context imbalance in 'mlxbf2_gpio_lock_release' - unexpected unlock

Cc: Asmaa Mnebhi <Asmaa@mellanox.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 drivers/gpio/gpio-mlxbf2.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpio/gpio-mlxbf2.c b/drivers/gpio/gpio-mlxbf2.c
index 861a8d0a84be0..befa5e1099439 100644
--- a/drivers/gpio/gpio-mlxbf2.c
+++ b/drivers/gpio/gpio-mlxbf2.c
@@ -149,6 +149,8 @@ static int mlxbf2_gpio_lock_acquire(struct mlxbf2_gpio_context *gs)
  * Release the YU arm_gpio_lock after changing the direction mode.
  */
 static void mlxbf2_gpio_lock_release(struct mlxbf2_gpio_context *gs)
+	__releases(&gs->gc.bgpio_lock)
+	__releases(yu_arm_gpio_lock_param.lock)
 {
 	writel(YU_ARM_GPIO_LOCK_RELEASE, yu_arm_gpio_lock_param.io);
 	spin_unlock(&gs->gc.bgpio_lock);
-- 
2.25.1


  parent reply	other threads:[~2020-06-30 13:34 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-30 13:33 [PATCH 00/10] Clean GPIO of W=1 warnings Lee Jones
2020-06-30 13:33 ` [PATCH 01/10] gpio: gpiolib-of: Provide documentation for of_gpio_spi_cs_get_count() Lee Jones
2020-07-08  7:14   ` Linus Walleij
2020-06-30 13:33 ` [PATCH 02/10] gpio: gpio-altera: Add missing kerneldoc entry and demote comment Lee Jones
2020-07-08  7:15   ` Linus Walleij
2020-06-30 13:33 ` [PATCH 03/10] gpio: gpio-ml-ioh: Fix missing ':' in 'struct ioh_gpio_reg_data Lee Jones
2020-06-30 14:01   ` Andy Shevchenko
2020-06-30 13:33 ` [PATCH 04/10] gpio: gpio-pmic-eic-sprd: Fix incorrectly named property 'map' Lee Jones
2020-06-30 15:01   ` Baolin Wang
2020-07-08  7:16   ` Linus Walleij
2020-06-30 13:33 ` [PATCH 05/10] gpio: gpio-sama5d2-piobu: Demote all kerneldoc headers to basic comment blocks Lee Jones
2020-07-01  7:05   ` Ludovic Desroches
2020-07-08  7:17   ` Linus Walleij
2020-06-30 13:33 ` [PATCH 06/10] gpio: gpio-syscon: Fix formatting issues which confuse kerneldoc Lee Jones
2020-07-08  7:18   ` Linus Walleij
2020-06-30 13:33 ` [PATCH 07/10] gpio: gpio-it87: " Lee Jones
2020-07-08  7:19   ` Linus Walleij
2020-06-30 13:33 ` [PATCH 08/10] gpio: gpio-mlxbf: Tell the compiler that ACPI functions may not be used Lee Jones
2020-07-08  7:20   ` Linus Walleij
2020-06-30 13:33 ` [PATCH 09/10] gpio: gpio-mlxbf2: Tell the compiler that ACPI functions may not be use Lee Jones
2020-06-30 14:17   ` Asmaa Mnebhi
2020-07-08  7:22   ` Linus Walleij
2020-06-30 13:33 ` Lee Jones [this message]
2020-06-30 14:18   ` [PATCH 10/10] gpio: gpio-mlxbf2.c: Provide __releases() annotation to stop confusing Sparse Asmaa Mnebhi
2020-07-08  7:23   ` Linus Walleij

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